Cost-effectiveness of Mohs micrographic surgery vs surgical excision for basal cell carcinoma of the face

Objective: To assess the cost-effectiveness of Mohs micrographic surgery (MMS) compared with the surgical excision for both primary and recurrent basal cell carcinoma (BCC). Design: A cost-effectiveness study performed alongside a prospective randomized clinical trial in which MMS was compared with surgical excision. Setting: The study was carried out from 1999 to 2002 at the dermatology outpatient clinic of the University Hospital Maastricht, Maastricht, the Netherlands. Participants: A total of 408 primary (374 patients) and 204 recurrent (191 patients) cases of facial BCC were included. Main Outcome Measures: The mean total treatment costs of MMS and surgical excision for both primary and recurrent BCC and the incremental cost-effectiveness ratio, calculated as the difference in costs between MMS and surgical excision divided by their difference in effectiveness. The resulting ratio is defined as the incremental costs of MMS compared with surgical excision to prevent 1 additional recurrence. Results: Compared with surgical excision, the total treatment costs ofMMSare significantly higher (cost difference: primary BCC, €254; 95% confidence interval, €181-€324; recurrent BCC, €249; 95% confidence interval, €175-€323). For primary BCC, the incremental cost-effectiveness ratio was €29 231, while the ratio for recurrent BCC amounted to €8094. The acceptability curves showed that for these ratios, the probability of MMS being more cost-effective than surgical excision never reached 50%. Conclusions: At present, it does not seem costeffective to introduce MMS on a large scale for both primary and recurrent BCC. However, because a 5-year period is normally required to determine definite recurrence rates, it is possible that MMS may become a costeffective treatment for recurrent BCC.

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